We had swapped our stay in Cancun by a two day trip to Isla Mujeres starting with a one-hour ferry trip to the island, some free time to explore the town/ island. On the second day we had an early start for boat trip, including an opportunity for reef snorkeling to see the beautiful underwater-world of a Caribbean reef and a visit to Isla Contoy. Isla Contoay is a bird sanctuary about 20km north of Isla Mujeres, where we had fish BBQ for lunch (delicious) before heading back.